for a fixed positive integer , we say a ring with identity is n-generalized right principally quasi-baer, if for any principal right ideal of , the right annihilator of is generated by an idempotent. this class of rings includes the right principally quasi-baer rings and hence all prime rings. a certain n-generalized principally quasi-baer subring of the matrix ring are studied, and connections...

The association between hyperstructures and binary relations had been intensively studied 5,6,10,11,2,4,20 . Chvalina 5,6 and Hort 2 use ordered structures for the construction of semigroups and hypergroups. Rosenberg 4 associated with any binary relation of full domain, a hypergroupoid and found conditions on , such that is a hypergroup. Corsini and Leoreanu 16 study hypergroups and binary rel...

When the first operation’s inverse axiom is deleted from ring, an algebraic structure, semiring, generated. Subsemiring one of subjects covered in semiring. The concepts fuzzy subsemiring, anti subsemiring and complement are introduced this paper. In addition, anti-subsemiring a wedge, or combination two more associated with non-empty subset semiring whose membership criteria defined by value z...

In order to enhance the practicality of multi-wavelength erbium-doped fiber lasers (MWEDFLs), a novel hybrid dual-ring configuration is proposed in this article, which can flatten the outputs through an optical nonlinear-polarization-rotation-based ring cavity and stabilize the shifts of power and central wavelength of oscillations through an electrical fuzzy-control-based feedback. The experim...

and key words This paper presents an historical overview of the evolution of the notion of probability . The different kinds of probability and the opposition between objectivists (or frequencists) and subjectivists are presented . Then we show how some works, following the wor k by Cox, aim at deducing what is called by others axioms of probabilities, from a given set of basic postulates which...

This paper presents the design of a fuzzy-controller-based ultra-high vacuum pressure control system and its performance evaluation for sputter-ion pump used in electron storage ring at Synchrotron Light Research Institute (Public Organization) Thailand. The production synchrotron light requires advanced technology to maintain stability prevent interference electrons an environment about 10−9 T...